CN1784921A - Method and apparatus for providing uplink signal-to-noise ratio (SNR) estimation in wireless communication system - Google Patents
Method and apparatus for providing uplink signal-to-noise ratio (SNR) estimation in wireless communication system Download PDFInfo
- Publication number
- CN1784921A CN1784921A CNA2004800121000A CN200480012100A CN1784921A CN 1784921 A CN1784921 A CN 1784921A CN A2004800121000 A CNA2004800121000 A CN A2004800121000A CN 200480012100 A CN200480012100 A CN 200480012100A CN 1784921 A CN1784921 A CN 1784921A
- Authority
- CN
- China
- Prior art keywords
- signal
- channel
- snr
- data
- pilot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004891 communication Methods 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000005259 measurement Methods 0.000 claims description 24
- 230000005540 biological transmission Effects 0.000 description 15
- 238000003860 storage Methods 0.000 description 12
- 238000009825 accumulation Methods 0.000 description 8
- 230000001427 coherent effect Effects 0.000 description 8
- 238000013459 approach Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 108010003272 Hyaluronate lyase Proteins 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/12—Outer and inner loops
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mobile Radio Communication Systems (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Noise Elimination (AREA)
- Radio Transmission System (AREA)
Abstract
A method and apparatus for providing uplink signal-to-noise ratio (SNR) estimation in a wireless communication system. A first signal is received over a first channel and a second signal is received over a second channel, where the second signal is received at a higher signal power level than said first signal. A signal-to-noise ratio (SNR) of the second signal is measured, and the SNR of the first signal is determined based at least in part upon the measured SNR of the second signal.
Description
Signal to noise ratio (snr) estimation approach and device
Priority request according to 35U.S.C. § 119
That the application requires to submit on March 6th, 2003, case number is No.030223P1, the exercise question priority for the U.S. Provisional Application No.60/452790 of " Method and Apparatus for a Reverse Link Communication in aCommunication System ".
Invention field
The present invention relates generally to communication system, relate in particular to and be used for providing signal noise ratio of upper link (SNR) estimation approach and device at wireless communication system.
Technical background
In the past few years, wireless communication technology has experienced volatile growth.The active force of this growth is from wireless traffic, and wireless traffic provides the freedom that moves for the communication public, rather than " constraint " is to wired communication system.The power of this growth is also from quality and speed via the increase of the speech of wireless medium and data communication, and other factors.Because these in the communications field strengthen, the quantity growth of radio communication past to the communication public produced significant effects, and will continue to produce significant effects.
One type wireless communication system comprises Wideband Code Division Multiple Access (WCDMA) (W-CDMA) system that is configured to support voice and data communication.Can there be a plurality of base station transceivers (basetransceiver site) in this system, and they communicate by Radio Link and a plurality of portable terminal.Base station transceiver sends data and control information by one group of forward link channel to portable terminal, and portable terminal sends data and control information by one group of reverse chain channel to base station transceiver.Particularly, the reverse chain channel that sends to base station transceiver from portable terminal comprises pilot channel, Traffic Channel, rate indicator channel etc.Traffic Channel sends to base station transceiver to data from portable terminal.Rate indicator channel provides data rate to base station transceiver, is used to show the speed that transmits data by Traffic Channel.Base station transceiver can be used for amplitude and phase reference to pilot channel, with the data on the demodulation Traffic Channel.
Reverse chain channel need carry out power control usually, changes to compensate the received signal that causes owing to the variation by the communication medium between portable terminal and the base station transceiver.This power control process is usually based on the signal to noise ratio (snr) of measurement pilot.For example, the SNR that the base station transceiver periodic measurement is received from the pilot channel of portable terminal, and itself and target SNR compared.If measured SNR is lower than target SNR, then base station transceiver sends one " UP " order to portable terminal.This indicating mobile terminal increases the power level of pilot channel and other channels.If measured SNR is higher than target SNR, then base station transceiver sends one " DOWN " order to portable terminal.This indicating mobile terminal reduces the power level of channel.Portable terminal increases or reduces channel transmitting power with fixing stride up or down.
Usually, when the data rate on the Traffic Channel increased, portable terminal also increased the signal power of Traffic Channel, to hold the data rate after the increase.For communication link is worked efficiently, needing usually increases pilot power, thinks that higher data rate provides better phase-detection.But, because portable terminal is limited to limited amount power by the total signal power of each reverse link transmissions, so, the signal power level of pilot channel is set to the nominal signal power level, with the increase of the signal power level of realizing Traffic Channel, thereby hold the data rate after the growth and reduce the pilot channel expense.Remain on the nominal signal power level by the signal power level with pilot channel, the SNR of Traffic Channel estimates may be not as accurate like that with the higher signal power level transmissions.As a result, because the reduction of transmitting on the pilot channel than the reliability of the measured SNR of low signal power levels, the inner loop power control of wireless communication system can be subjected to negative effect.
The present invention is intended to overcome or reduce at least the influence of above-mentioned one or more problems.
Summary of the invention
According to an aspect of the present invention, provide a kind of method that is used for wireless communication system.This method comprises: receive first signal and receive secondary signal by second channel by first channel, wherein, the signal power level that receives secondary signal is higher than the signal power level that receives first signal.Measure the signal to noise ratio (snr) of secondary signal, and, at least in part based on the measurement SNR of secondary signal, determine the SNR of first signal.
According to a further aspect in the invention, provide a kind of device.This device comprises at least one transmitter, is used for by first channels transmit, first signal with by second channel emission secondary signal, and wherein, the signal power level of emission secondary signal is higher than the signal power level of launching first signal.This system also comprises at least one receiver, is used to receive first and second signals.This receiver is measured the signal to noise ratio (snr) of secondary signal, and, at least in part based on the measured SNR of secondary signal, determine the SNR of first signal.
According to a further aspect in the invention, provide a kind of equipment.This equipment comprises receiver, is used for receiving first signal and receiving secondary signal by second channel by first channel, and wherein, the signal power level that receives secondary signal is higher than the signal power level that receives first signal.This equipment also comprises a processor, is used to measure the signal to noise ratio (snr) of secondary signal, and at least in part based on the measured SNR of secondary signal, determines the SNR of first signal.
According to a further aspect in the invention, provide a kind of portable terminal.This portable terminal comprises transmitter, is used for arriving base station transceiver by first channels transmit, first signal with by second channel emission secondary signal, and wherein, the signal power level of emission secondary signal is higher than the signal power level of launching first signal.This base station transceiver receives first and second signals, measures the signal to noise ratio (snr) of secondary signal, and, at least in part based on the measured SNR of secondary signal, determine the SNR of first signal.
According to a further aspect in the invention, provide a kind of computer-readable medium, realized a kind of method that is used for wireless communication system.This method comprises: receive first signal and receive secondary signal by second channel by first channel, wherein, the signal power level that receives secondary signal is higher than the signal power level that receives first signal.Measure the signal to noise ratio (snr) of secondary signal, and, at least in part based on the measured SNR of secondary signal, determine the SNR of first signal.
The accompanying drawing summary
Fig. 1 is the block diagram of the wireless communication system of an illustrative embodiment according to the present invention;
Fig. 2 is the detailed maps of the portable terminal that communicates in the wireless communication system of Fig. 1;
Fig. 3 is the detailed maps of the base station transceiver in the wireless communication system of Fig. 1;
Fig. 4 is the schematic diagram of employed forward direction and reverse chain channel between portable terminal and the base station transceiver;
Fig. 5 A and 5B show the rate indicator channel of transmitting with code division multiplexing (CDM) and Time Division Multiplexing mode respectively;
Fig. 6 is portable terminal sends a schematic diagram from the relative signal power level of Traffic Channel, rate control channel and pilot channel to base station transceiver;
Fig. 7 shows a search list that is stored in the base station transceiver, and it provides the relation between the data rate of Traffic Channel, the business of corresponding reverse chain channel-pilot tone ratio and the RICH-pilot tone ratio; And
Fig. 8 is the flow chart that pilot tone SNR and symbol SNR estimation approach are provided according to one embodiment of the invention.
Embodiment
With reference to the accompanying drawings, specifically with reference to figure 1, Fig. 1 shows wireless communication system 100 according to an embodiment of the invention.Wireless communication system 100 comprises a plurality of portable terminals (MT) 105, they and a plurality of base station transceiver (BTS) 110 communicate, base station transceiver disperses geographically, provides continuous coverage for them when passing wireless communication system 100 with convenient portable terminal 105.
For example, portable terminal 105 can be radio telephone, Peronal Information Manager (PIM), PDA(Personal Digital Assistant) or the other types computing terminal that is configured to carry out radio communication.Base station transceiver 110 sends data by the forward link of radio communication channel 115 to portable terminal 105, and portable terminal 105 sends data by the reverse link of channel 115 to base station transceiver 110.
In one embodiment, wireless communication system 100 is followed certain version of W-CDMA (Wideband Code Division Multiple Access (WCDMA)) standard usually.W-CDMA is a kind of third generation based on the IS-95 standard (3G) wireless communication standard.According to this illustrative embodiment, the operation of wireless communication system 100 utilizes 3GPP (third generation cooperative programme) version 6 of W-CDMA standard, still, in other versions of W-CDMA standard, also can realize other embodiment.In another embodiment, wireless communication system 100 can be revised D work according to the 3GPP2 of cdma2000 standard.Should be understood that, should be interpreted as the embodiments described herein illustrative and nonrestrictive.Therefore, under the prerequisite that does not break away from the present invention's spirit and protection range, system 100 can be various types of wireless communication systems.
Each base station transceiver 110 is connected to base station controller (BSC) 120, the base station transceiver 110 of BSC120 control wireless communication system 100 and the connection between other communication system components.Base station transceiver 110 and base station controller 120 form Radio Access Network (RAN) together, be used for and communicate transceive data between a plurality of portable terminals 105 in wireless communication system 100.Base station transceiver 110 is connected to base station controller 120 by communication link 125, and communication link 125 can be wired E1 or T1 link.But communication link 125 also can be any one in the multiple wired or wireless communication media, and it is including, but not limited to microwave, optical fiber etc.In addition, the brief description to wireless communication system 100 is the present invention for convenience of description among Fig. 1.Should be understood that under the prerequisite that does not break away from spirit of the present invention and protection range, wireless communication system 100 can be configured to have any amount of portable terminal 150, base station transceiver 110 and base station controller 120.
Fig. 2 shows the detailed maps of portable terminal 105 according to an embodiment of the invention.In a kind of more simple form, portable terminal 105 comprises transmitter 205, is used for the reverse link by radio communication channel 115, and data are sent to base station transceiver 110.Portable terminal 105 also comprises receiver 210, is used for the forward link by radio communication channel 115, receives the data that send from base station transceiver 110.In another embodiment, can be combined into single transceiver unit to transmitter 205 and receiver 210, rather than be embodied as two independent communities as shown in the figure.Transmitter 205 and receiver 210 are connected to antenna 215, so that carry out the wireless transmission and the reception of data by radio communication channel 115.
Processor 220 is handled the data that received by data input cell 230, then it is transmitted to transmitter 205, arrives base station transceiver 110 with the rl transmission through radio communication channel 115.The data from base station transceiver 110 that received by the forward link of receiver 210 by radio communication channel 115 are forwarded to processor 220, to handle, be transmitted to data output unit 235 then, be used for various purposes, for example, present to the user of portable terminal 105.Data output unit 235 can be in loud speaker, video display and data equipment (as the terminal) output one of at least or its combination.Should be understood that, but data output unit 235 can comprise various other videos or audio frequency awareness apparatus, therefore not necessarily be limited to above-mentioned example.In addition, Fig. 2 is to just the present invention for convenience of explanation of simple description of portable terminal 105.Correspondingly, it is to be further understood that the miscellaneous part of portable terminal 105 outside can comprising shown in the figure, to realize various other functions and/or the ability of portable terminal 105.
Fig. 3 shows the detailed maps of base station transceiver 110 according to an embodiment of the invention.In a kind of simple form, base station transceiver 110 comprises: transmitter 305 is used for the forward link by radio communication channel 115, to portable terminal 105 emission data; Receiver 310 is used for the reverse link by radio communication channel 115, receives the data from portable terminal 105.In another embodiment, can be combined into single transceiver unit to transmitter 305 and receiver 310, rather than be embodied as two independent communities as shown in the figure.Transmitter 305 and receiver 310 are connected to antenna 315, to promote carrying out transmitting and receiving of data by radio communication channel 115.
The information of representing to send to from portable terminal 105 base station transceiver 110 with bit via these reverse chain channels 420.Several bits are formed a frame, and are encoded into modulation symbol.Modulation symbol is transferred to base station transceiver 110 via suitable reverse chain channel 420 then.For example, the speed indication bit is encoded into speed indication modulation symbol, then, R-RICH426 transmits via rate indicator channel.Equally, bits of traffic data is encoded into data modulation symbol, and transmits by Traffic Channel R-DPDCH424.
The signal of Traffic Channel R-DPDCH424 carrying comprises from portable terminal 105 to base station transceiver 110 Frame.The data rate that transmits these frames is normally variable.Generally, when the data rate on the Traffic Channel R-DPDCH424 increases, also increase in the required quantity of power of Traffic Channel R-DPDCH424 transmitting data service signal.
The signal of rate indicator channel R-RICH426 carrying comprises the corresponding speed indication of the data service frame frame of going up transmission with Traffic Channel R-DPDCH424.The data rate of each speed indication frame identification corresponding data traffic frame.Rate indicator channel R-RICH426 also carries and mixes automatic repeat requests (HARQ) information (as Sub-Packet ID, redundancy versions etc.), and this makes 110 couples of Traffic Channel R-DPDCH424 of base station transceiver decode.HARQ than special envoy base station transceiver 110 otherwise before decoding with the data symbol received with carry out soft combination by the previous transmission of Traffic Channel R-DPDCH424, or will receive that independently symbol decodes.Rate indicator channel R-RICH426 has fixing low data rate usually.
The pilot signal of pilot signal DPCCH422 carrying provides amplitude and phase reference, for example, is used for the data on the Traffic Channel R-DPDCH424 are carried out demodulation.Correspondingly, base station transceiver 110 can be with pilot channel DPCCH422 as the demodulation reference, with the signal of demodulation from portable terminal 105 receptions.According to this illustrative embodiment, pilot signal has fixing low data rate, so that portable terminal 105 transmits with higher signal power on Traffic Channel R-DPDCH424, thereby holds the higher data rate that it transmits above.
In one embodiment, with code division multiplexing (CDM) mode rate indicator channel R-RICH426, shown in Fig. 5 A, wherein, go up rate indicator channel R-RICH426 at the Code Channel that separates with R-DPDCH424 (code channel).In another embodiment, in the Time Division Multiplexing mode, with Traffic Channel R-DPDCH424, rate indicator channel R-RICH426 on identical Code Channel, shown in Fig. 5 B, with the time be divided into the basis.
Usually, along with the increase that Traffic Channel R-DPDCH424 goes up data rate, terminal 105 also increases the signal power of Traffic Channel R-DPDCH424, to hold the data rate after the increase.In order to make the communication link efficient operation, increase pilot power usually, think that higher data rate provides better phase estimation.Because the maximum total signal power that portable terminal 105 can transmit on each reverse chain channel 420 is limited to limited quantity of power, so, the signal power level of pilot channel DPCCH422 is set to the nominal signal power level, with the increase of the signal power level of realizing Traffic Channel R-DPDCH424, thereby hold the data rate after the increase and reduce pilot signal DPCCH422 expense.
But by the signal power level of pilot channel DPCCH422 is remained on the nominal signal power level, the estimation of the signal to noise ratio (snr) of pilot channel DPCCH422 is accurate may be when transmitting with the higher signal level power.The signal power level of rate indicator channel R-RICH426 is higher than pilot channel DPCCH422, by the SNR of measure R-RICH426, can obtain to estimate more accurately to pilot channel SNR.Owing to pilot channel DPCCH422 has been obtained SNR more accurately, so 100 pairs of turbo decodings of wireless communication system can realize inner loop power control more efficiently and symbol adjustment (symbolscaling).
Fig. 6 shows the relative signal power level that Traffic Channel R-DPDCH424, rate indicator channel R-RICH426 and pilot channel DPCCH422 is sent to base station transceiver 110 for specific data rate portable terminal 105.According to shown embodiment, the signal power level of pilot channel DPCCH422 remains on nominal level, allowing with higher signal power level transport service channel R-DPDCH424, thereby holds higher data rate.In shown embodiment, with RICH-pilot tone (R/P) than (promptly, every chip energy ratio of the pilot signal on the rate indicator signal on the rate indicator channel R-RICH426 and the pilot channel DPCCH422) compare, business-pilot tone (T/P) is relative more higher than (that is every chip energy ratio of the pilot signal on the data-signal on the Traffic Channel R-DPDCH424 and the pilot channel DPCCH422).When the data rate on the Traffic Channel R-DPDCH424 increased, the difference between business-pilot tone ratio and the RICH-pilot tone ratio also increased.When determining the SNR of pilot channel DPCCH422 and Traffic Channel R-DPDCH424, the relation between business-pilot tone ratio and the RICH-pilot tone ratio plays an important role.
In order to determine the SNR of pilot channel DPCCH422, measure the SNR of rate indicator channel R-RICH426.According to shown in embodiment, when when portable terminal 105 is received symbol, be stored in the memory 325 of base station transceiver 110 from the symbol of Traffic Channel R-DPDCH424.Formulate below the available normalization RICH symbol that (for example, channel estimating and elimination rotation) receives from rate indicator channel R-RICH426 after pilot tone is filtered:
Wherein, α
k=attenuation coefficient;
E
C, richThe energy of=every RICH chip;
E
CpThe energy of=every pilot chip;
The spreading factor of SF=RICH;
SF
pThe spreading factor of=pilot tone;
I
o=total received power spectrum density;
φ=phase place;
N
i=noise adds the interference power spectrum density;
n
Kl, n
KQ, n
Kl, n
KQ=multiple noise adds distracter.
By coherently, incoherently accumulate the RICH symbol, perhaps, the combination of relevant and non-coherent accumulation can be determined the SNR of rate indicator channel R-RICH426.When accumulating the RICH symbol, the energy addition of each the RICH symbol that transmits by RICH incoherently.Following equation is represented an example of non-coherent accumulation, and it provides the estimation (E to the RICH symbol energy
S, rich/ I
o):
Estimation (the N that represents noise power spectral density with following equation
i/ I
o):
When coherently accumulating the RICH symbol, base station transceiver 110 is decoded to RICH earlier.If RICH repeats in transmission course, then can after each transmission, decode to RICH.Complete successfully after the decoding, base station transceiver 110 is learned the RICH symbol that is sent, and can coherently sue for peace to the symbol of receiving then.An example of coherent accumulation represents that with following equation it provides the estimation (E of RICH symbol energy
S, rich/ I
o):
Wherein,
z
k=at the estimation RICH of time k symbol
Estimation (the N of noise power spectral density
i/ I
o) equation below available represents:
For non-coherent accumulation and coherent accumulation, can obtain the SNR (E of rate indicator channel R-RICH426 by following equation
S, rich/ N
i):
At the SNR (E that obtains rate indicator channel R-RICH 426
S, rich/ N
i) afterwards, can obtain the SNR (E of pilot channel DPCCH 422 by following equation
C, pilot/ N
i):
Particularly, by measurement SNR (E to rate indicator channel R-RICH426
S, rich/ N
i) and ask product from the RICH-pilot tone that the Traffic Channel R-DPDCH424 of the table 700 of storage in the memory 325 of base station transceiver 110 goes up specific data rate than 730 inverse, determine the SNR (E of pilot channel DPCCH422
C, pilot/ N
i).As mentioned above, the RICH-pilot tone is every chip energy ratio (E between rate indicator signal and the pilot signal than 730
C, rich/ E
C, pilot).At the SNR (E that obtains pilot channel DPCCH422
C, pilot/ N
i) afterwards, base station transceiver 110 can use pilot tone SNR to carry out inner loop power control more accurately, to communicate with portable terminal 105.To those skilled in the art, base station transceiver 110 is known based on the mode that estimating pilot frequency SNR carries out inner loop power control.Therefore, for fear of unnecessarily fuzzy the present invention, no longer introduce the details of determining power control based on pilot tone SNR here.
Can obtain to be used to measure the symbol SNR (D of adjustment by following equation
S, data/ N
i):
By measurement SNR (E to rate indicator channel R-RICH426
S, rich/ N
i), the Traffic Channel R-DPDCH424 RICH-pilot tone that goes up specific data rate asks product than 730 inverse and business-pilot tone than 720, determines symbol SNR (E
S, data/ N
i).As previously mentioned, from the memory 325 of base station transceiver 110, obtain in the table 700 of storage RICH-pilot tone that Traffic Channel R-DPDCH424 goes up specific data rate 710 than 730 and business-pilot tone than 720.Then, the symbol SNR (E of base station transceiver 110 usefulness estimation
S, data/ N
i) carry out the tolerance adjustment in the turbo decoding.To those skilled in the art, base station transceiver 110 is known based on the mode that estimate symbol SNR carries out the tolerance adjustment.Therefore, for fear of unnecessarily fuzzy the present invention, no longer introduce here based on symbol SNR and determine the details that tolerance is adjusted.
In Fig. 8, show according to first embodiment of the invention pilot tone SNR and symbol SNR are carried out estimation approach.In module 810, the receiver 310 of base station transceiver 110 receives the pilot signal, data and the rate indicator signal that send from portable terminal 105 by corresponding pilot channel DPCCH422, Traffic Channel R-DPDCH424 and rate indicator channel R-RICH426.According to an embodiment, rate indicator channel R-RICH426 transmits in code division multiplexing (CDM) mode, shown in Fig. 5 A, wherein, with Code Channel that Traffic Channel R-DPDCH424 separates on, rate indicator channel R-RICH426.In another embodiment, can use time division multiplexing (TDM) mode, with Traffic Channel R-DPDCH424, with time division way, rate indicator channel R-RICH426 is shown in Fig. 5 B on identical Code Channel.
In module 820, when the symbol that receives from portable terminal 105, base station transceiver 110 storages are from the symbol of Traffic Channel R-DPDCH424.In module 830, the processor 320 of base station transceiver 110 coherently, incoherent ground or with the compound mode of relevant and non-coherent accumulation, estimate the SNR of rate indicator channel R-RICH426.Particularly, when accumulating the RICH symbol, to the energy summation of each the RICH symbol in the RICH transmission incoherently.When coherently accumulating the RICH symbol, base station transceiver 110 is decoded to RICH earlier.If the RICH symbol repeats in transmission, then after each transmission, can decode to RICH.Complete successfully after the decoding, base station transceiver 110 is learned the RICH symbol that is sent, and can coherently sue for peace to the symbol of being received then.The example of coherent accumulation and non-coherent accumulation has been described in the front, and they provide the estimation to the RICH symbol energy.In one embodiment, to RICH symbol energy (E
S, rich/ I
o) and noise power spectral density (N
i/ I
o) inverse ask product, can obtain the SNR (E of rate indicator channel R-RICH426
S, rich/ N
i), the front has provided its computing formula.
In module 840, by asking product to the measurement SNR of rate indicator channel R-RICH426 with from the RICH-pilot tone of specific data rate 710 on the Traffic Channel R-DPDCH424 of the table 700 of storage in the memory 325 of base station transceiver 110 than 730 inverse, the processor 320 of base station transceiver 110 is determined the pilot tone SNR (E of Traffic Channel DPCCH422
C, pilot/ N
i), shown in following equation:
Obtain after the SNR of pilot channel DPCCH422, base station transceiver 110 can use pilot tone SNR to carry out inner loop power control, to use approach well known, communicates with portable terminal 105.
In module 850, the processor 320 of base station transceiver 110 is asked product than 730 inverse and business-pilot tone than 720 by the RICH-pilot tone that measurement SNR, Traffic Channel R-DPDCH424 to rate indicator channel R-RICH426 go up specific data rate, determines the symbol SNR (D of Traffic Channel R-DPDCH424
S, data/ N
i), shown in following equation:
As previously mentioned, the business-pilot tone of the specific data rate 710 on the Traffic Channel R-DPDCH424 than 720 and the RICH-pilot tone be to obtain in the table 700 of storage from the memory 325 of base transceiver station 110 than 730.Then, use approach well known, base station transceiver 110 can use the symbol SNR of estimation, measures adjustment in the turbo decoding.
Remain on the nominal signal power level by signal power level with pilot channel DPCCH422, to hold the more high data rate on the Traffic Channel R-DPDCH424, this will cause the SNR of pilot channel DPCCH422 to estimate unlike accurate with higher signal power level transmission.Utilize said method, by measuring the SNR of rate indicator channel R-RICH426, estimating pilot frequency channel SNR more accurately, the signal power level of rate indicator channel R-RICH426 is higher than the signal power level of transmission pilot channel R-DPCCH422.Because pilot channel DPCCH422 has been obtained SNR more accurately, wireless communication system 100 can be realized inner loop power control more efficiently and symbol adjustment to the turbo decoding.
One skilled in the art will appreciate that and to use any various technology and method to come expression information and signal.For example, data, instruction, order, information, signal, bit, symbol and the chip of mentioning in the description on run through can be represented with voltage, electric current, electromagnetic wave, magnetic field or particle, light field or particle or above-mentioned combination in any.
Those skilled in the art also can understand, various exemplary box, module, circuit and the algorithm steps of describing in conjunction with the disclosed embodiments all can electronic hardware here, computer software or the combination of the two realize.In order to be clearly shown that the interchangeability between the hardware and software, more than various exemplary assembly, square frame, module, circuit and steps are all carried out generally description with its functional form.This functional be to realize or realize depending on the design constraint that specific application and whole system are applied with software with hardware.Those skilled in the art can realize described functional at each specific application in many ways, and still the result of this realization should not be construed as and causes deviating from scope of the present invention.
Utilize general processor, digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA) or other programmable logical devices, discrete gate or transistor logic, discrete hardware components or the combination in any among them, can realize or carry out various exemplary logic diagram, module and the circuit described in conjunction with embodiment disclosed herein.General processor may be a microprocessor, but in another kind of situation, this processor may be processor, controller, microcontroller or the state machine of any routine.Processor also may be implemented as the combination of computing equipment, for example, and the combination of DSP and microprocessor, a plurality of microprocessor, one or more microprocessor or any other this kind structure in conjunction with the DSP core.
In conjunction with the described method of embodiment disclosed herein or algorithm can directly be presented as hardware, the software module carried out by processor or the combination of these two.Software module may be present in the storage media of RAM memory, flash memory, ROM memory, eprom memory, eeprom memory, register, hard disk, mobile disk, CD-ROM or any other form well known in the art.The coupling of a kind of exemplary storage medium and processor, thus make processor can be from this storage media read message, and can be to this storage media write information.In replacing example, storage media is the part of processor.Processor and storage media may be present among the ASIC.This ASIC may be present in the subscriber station.Replace in the example at one, the discrete assembly that processor and storage media can be used as in the subscriber station exists.
Provide the foregoing description of described disclosed embodiment can make those skilled in the art can realize or use the present invention.To those skilled in the art, the various modifications of these embodiment are conspicuous, and the general principles of definition here also can be applied to other embodiment on the basis that does not depart from the scope of the present invention with purport.Therefore, the embodiment that the present invention is not limited to illustrate here, but consistent with the widest scope that meets principle disclosed herein and novel feature.
Claims (37)
1, a kind of method that is used for wireless communication system comprises:
Receive first signal and receive secondary signal by second channel by first channel, the signal power level that receives described secondary signal is higher than the signal power level that receives described first signal;
Measure the signal to noise ratio (snr) of described secondary signal; And
Based on the described measurement SNR of described secondary signal, determine the SNR of described first signal at least in part.
2, the method for claim 1, wherein described receive first signal and receive secondary signal by first channel at least by second channel also comprise:
At least by described first channel reception pilot signal with by described second channel receiving velocity index signal, described rate indicator signal indication receives the data rate of data-signal by the 3rd channel.
3, method as claimed in claim 2, wherein, the signal power level that receives described data-signal by described the 3rd channel is higher than the signal power level that receives described rate indicator signal and described pilot signal.
4, method as claimed in claim 2 also comprises:
Based on the described data rate that receives described data-signal by described the 3rd channel, determine first every chip energy ratio between described rate indicator signal and the pilot signal at least in part.
5, method as claimed in claim 4, wherein, the SNR of described definite described first signal also comprises:
Based on the described measurement SNR of described rate indicator signal and described first every chip energy ratio between described rate indicator signal and the pilot signal, determine the SNR of described pilot signal.
6, method as claimed in claim 4 also comprises:
Based on the described data rate that receives described data-signal by described the 3rd channel, determine second every chip energy ratio between described data-signal and the pilot signal at least in part.
7, method as claimed in claim 6 also comprises:
At least based on described measurement SNR and described first and second every chip energy ratios of described rate indicator signal, determine the SNR of described data-signal.
8, a kind of device comprises:
At least one transmitter is used for by first channels transmit, first signal with by second channel emission secondary signal, and the signal power level of launching described secondary signal is higher than the signal power level of launching described first signal; And
At least one receiver is used to receive described first and second signals; And
Wherein, described receiver is measured the signal to noise ratio (snr) of described secondary signal, and, at least in part based on the described measurement SNR of described secondary signal, determine the SNR of described first signal.
9, device as claimed in claim 8, wherein, described first signal is a pilot signal, and described secondary signal is a rate indicator signal, and wherein, described rate indicator signal indication is by the data rate of the 3rd channel reception from the data-signal of described transmitter.
10, device as claimed in claim 9, wherein, the signal power level that receives described data-signal by described the 3rd channel is higher than the signal power level that receives described rate indicator signal and described pilot signal.
11, device as claimed in claim 9, wherein, described receiver is determined first every chip energy ratio between described rate indicator signal and the pilot signal at least in part based on the described data rate that receives described data-signal by described the 3rd channel.
12, device as claimed in claim 11, wherein, described receiver is determined the SNR of described pilot signal based on the described measurement SNR of described rate indicator signal and described first every chip energy ratio between described rate indicator signal and the pilot signal.
13, device as claimed in claim 11, wherein, described receiver is determined second every chip energy ratio between described data-signal and the pilot signal at least in part based on the described data rate that receives described data-signal by described the 3rd channel.
14, device as claimed in claim 13, wherein, described receiver is determined the SNR of described data-signal at least in part based on described measurement SNR and described first and second every chip energy ratios of described rate indicator signal.
15, device as claimed in claim 8, wherein, described transmitter is a portable terminal, and described receiver is a base station transceiver.
16, device as claimed in claim 8, wherein, described transmitter and described receiver communicate via code division multiple access (CDMA) pattern.
17, a kind of equipment comprises:
Receiver is used for receiving first signal and receiving secondary signal by second channel by first channel, and the signal power level that receives described secondary signal is higher than the signal power level that receives described first signal; And
Processor is used to measure the signal to noise ratio (snr) of described secondary signal, and, at least in part based on the described measurement SNR of described secondary signal, determine the SNR of described first signal.
18, equipment as claimed in claim 17, wherein, described first signal is a pilot signal, described secondary signal is a rate indicator signal, and wherein, described rate indicator signal indication is received the data rate of data-signal by described transmitter by the 3rd channel.
19, equipment as claimed in claim 18, wherein, the signal power level that receives described data-signal by described the 3rd channel is higher than the signal power level that receives described rate indicator signal and described pilot signal.
20, equipment as claimed in claim 18, wherein, described processor is determined first every chip energy ratio between described rate indicator signal and the pilot signal at least in part based on the described data rate that receives described data-signal by described the 3rd channel.
21, equipment as claimed in claim 20, wherein, described processor is determined the SNR of described pilot signal based on the described measurement SNR of described rate indicator signal and described first every chip energy ratio between described rate indicator signal and the pilot signal.
22, equipment as claimed in claim 20, wherein, described processor is determined second every chip energy ratio between described data-signal and the pilot signal at least in part based on the described data rate that receives described data-signal by described the 3rd channel.
23, equipment as claimed in claim 22, wherein, described processor is determined the SNR of described data-signal at least in part based on described measurement SNR and described first and second every chip energy ratios of described rate indicator signal.
24, a kind of portable terminal comprises:
Transmitter is used for launching secondary signal to base station transceiver by first channels transmit, first signal with by second channel, and the signal power level of launching described secondary signal is higher than the signal power level of launching described first signal; And
Wherein, described base station transceiver receives described first and second signals, measures the signal to noise ratio (snr) of described secondary signal, and, at least in part based on the described measurement SNR of described secondary signal, determine the SNR of described first signal.
25, portable terminal as claimed in claim 24, wherein, described first signal is a pilot signal, and described secondary signal is a rate indicator signal, and wherein, described rate indicator signal indication is received the data rate of data-signal by described transmitter by the 3rd channel.
26, portable terminal as claimed in claim 25, wherein, the signal power level that receives described data-signal by described the 3rd channel is higher than the signal power level that receives described rate indicator signal and described pilot signal.
27, portable terminal as claimed in claim 25, wherein, described base station transceiver is determined first every chip energy ratio between described rate indicator signal and the pilot signal at least in part based on the described data rate that receives described data-signal by described the 3rd channel.
28, portable terminal as claimed in claim 27, wherein, described base station transceiver is determined the SNR of described pilot signal based on the described measurement SNR of described rate indicator signal and described first every chip energy ratio between described rate indicator signal and the pilot signal.
29, portable terminal as claimed in claim 27, wherein, described base station transceiver is determined second every chip energy ratio between described data-signal and the pilot signal at least in part based on the described data rate that receives described data-signal by described the 3rd channel.
30, portable terminal as claimed in claim 29, wherein, described base station transceiver is determined the SNR of described data-signal at least in part based on described measurement SNR and described first and second every chip energy ratios of described rate indicator signal.
31, a kind of computer-readable medium, realization is used for the method for wireless communication system, and described method comprises:
Receive first signal and receive secondary signal by second channel by first channel, the signal power level that receives described secondary signal is higher than the signal power level that receives described first signal;
Measure the signal to noise ratio (snr) of described secondary signal; And
Based on the described measurement SNR of described secondary signal, determine the SNR of described first signal at least in part.
32, method as claimed in claim 31, wherein, described receive first signal and receive secondary signal by first channel at least by second channel also comprise:
At least by described first channel reception pilot signal with by described second channel receiving velocity index signal, described rate indicator signal indication receives the data rate of data-signal by the 3rd channel.
33, method as claimed in claim 32, wherein, the signal power level that receives described data-signal by described the 3rd channel is higher than the signal power level that receives described rate indicator signal and described pilot signal.
34, method as claimed in claim 32 also comprises:
Based on the described data rate that receives described data-signal by described the 3rd channel, determine first every chip energy ratio between described rate indicator signal and the pilot signal at least in part.
35, method as claimed in claim 34, wherein, the SNR of described definite described first signal also comprises:
Based on the described measurement SNR of described rate indicator signal and described first every chip energy ratio between described rate indicator signal and the pilot signal, determine the SNR of described pilot signal.
36, method as claimed in claim 34 also comprises:
Based on the described data rate that receives described data-signal by described the 3rd channel, determine second every chip energy ratio between described data-signal and the pilot signal at least in part.
37, method as claimed in claim 36 also comprises:
At least based on described measurement SNR and described first and second every chip energy ratios of described rate indicator signal, determine the SNR of described data-signal.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US45279003P | 2003-03-06 | 2003-03-06 | |
US60/452,790 | 2003-03-06 | ||
US10/794,917 | 2004-03-05 | ||
US10/794,917 US7215930B2 (en) | 2003-03-06 | 2004-03-05 | Method and apparatus for providing uplink signal-to-noise ratio (SNR) estimation in a wireless communication |
PCT/US2004/007015 WO2004080106A2 (en) | 2003-03-06 | 2004-03-08 | Method and apparatus for providing uplink signal-to-noise ratio (snr) estimation in a wireless communication system |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201010157112XA Division CN101868015B (en) | 2003-03-06 | 2004-03-08 | Method and apparatus for providing uplink signal-to-noise ratio (SNR) estimation in a wireless communication system |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1784921A true CN1784921A (en) | 2006-06-07 |
CN1784921B CN1784921B (en) | 2010-12-08 |
Family
ID=32965593
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201010157112XA Expired - Lifetime CN101868015B (en) | 2003-03-06 | 2004-03-08 | Method and apparatus for providing uplink signal-to-noise ratio (SNR) estimation in a wireless communication system |
CN2004800121000A Expired - Lifetime CN1784921B (en) | 2003-03-06 | 2004-03-08 | Method and apparatus for providing uplink signal-to-noise ratio (SNR) estimation in wireless communication system |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201010157112XA Expired - Lifetime CN101868015B (en) | 2003-03-06 | 2004-03-08 | Method and apparatus for providing uplink signal-to-noise ratio (SNR) estimation in a wireless communication system |
Country Status (15)
Country | Link |
---|---|
US (3) | US7215930B2 (en) |
EP (3) | EP1600027B1 (en) |
JP (2) | JP4653077B2 (en) |
KR (3) | KR101107375B1 (en) |
CN (2) | CN101868015B (en) |
AT (1) | ATE519280T1 (en) |
AU (1) | AU2004217283B2 (en) |
BR (2) | BRPI0419347B1 (en) |
CA (1) | CA2518183C (en) |
ES (2) | ES2629830T3 (en) |
HU (1) | HUE035063T2 (en) |
MX (1) | MXPA05009463A (en) |
RU (2) | RU2372744C2 (en) |
TW (2) | TWI423717B (en) |
WO (1) | WO2004080106A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101106402B (en) * | 2006-06-30 | 2012-11-14 | 英特尔公司 | Signal-to-noise ratio (SNR) method and device used for computer |
Families Citing this family (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4132979B2 (en) * | 2002-05-27 | 2008-08-13 | 日本電気株式会社 | Radio base station |
US6996763B2 (en) * | 2003-01-10 | 2006-02-07 | Qualcomm Incorporated | Operation of a forward link acknowledgement channel for the reverse link data |
US7738848B2 (en) | 2003-01-14 | 2010-06-15 | Interdigital Technology Corporation | Received signal to noise indicator |
US7660282B2 (en) | 2003-02-18 | 2010-02-09 | Qualcomm Incorporated | Congestion control in a wireless data network |
US7286846B2 (en) * | 2003-02-18 | 2007-10-23 | Qualcomm, Incorporated | Systems and methods for performing outer loop power control in wireless communication systems |
US8023950B2 (en) | 2003-02-18 | 2011-09-20 | Qualcomm Incorporated | Systems and methods for using selectable frame durations in a wireless communication system |
US7505780B2 (en) * | 2003-02-18 | 2009-03-17 | Qualcomm Incorporated | Outer-loop power control for wireless communication systems |
US8391249B2 (en) * | 2003-02-18 | 2013-03-05 | Qualcomm Incorporated | Code division multiplexing commands on a code division multiplexed channel |
US8150407B2 (en) * | 2003-02-18 | 2012-04-03 | Qualcomm Incorporated | System and method for scheduling transmissions in a wireless communication system |
US7155236B2 (en) | 2003-02-18 | 2006-12-26 | Qualcomm Incorporated | Scheduled and autonomous transmission and acknowledgement |
US8081598B2 (en) | 2003-02-18 | 2011-12-20 | Qualcomm Incorporated | Outer-loop power control for wireless communication systems |
US20040160922A1 (en) | 2003-02-18 | 2004-08-19 | Sanjiv Nanda | Method and apparatus for controlling data rate of a reverse link in a communication system |
US7215930B2 (en) * | 2003-03-06 | 2007-05-08 | Qualcomm, Incorporated | Method and apparatus for providing uplink signal-to-noise ratio (SNR) estimation in a wireless communication |
US8705588B2 (en) | 2003-03-06 | 2014-04-22 | Qualcomm Incorporated | Systems and methods for using code space in spread-spectrum communications |
US8477592B2 (en) | 2003-05-14 | 2013-07-02 | Qualcomm Incorporated | Interference and noise estimation in an OFDM system |
US8489949B2 (en) | 2003-08-05 | 2013-07-16 | Qualcomm Incorporated | Combining grant, acknowledgement, and rate control commands |
CN1773867B (en) * | 2004-11-08 | 2012-01-11 | 华为技术有限公司 | Method for decoding Turbo code |
TWI394382B (en) * | 2004-11-10 | 2013-04-21 | Koninkl Philips Electronics Nv | A method of operating a communication system, a radio station, and a radio communication system |
US7809336B2 (en) | 2005-03-07 | 2010-10-05 | Qualcomm Incorporated | Rate selection for a quasi-orthogonal communication system |
US7349504B2 (en) * | 2005-03-18 | 2008-03-25 | Navini Networks, Inc. | Method and system for mitigating interference in communication system |
JP4826122B2 (en) | 2005-04-14 | 2011-11-30 | 日本電気株式会社 | Received power measurement method for CDMA mobile communication system and CDMA mobile communication system |
US20060269024A1 (en) * | 2005-05-27 | 2006-11-30 | Francis Dominique | Initial multi-path acquisition of random access channels |
US7764656B2 (en) * | 2005-07-13 | 2010-07-27 | Alcatel-Lucent Usa Inc. | Methods of multipath acquisition for dedicated traffic channels |
US7929499B2 (en) * | 2005-07-13 | 2011-04-19 | Alcatel-Lucent Usa Inc. | Methods of multipath acquisition for dedicated traffic channels |
US7856071B2 (en) * | 2005-07-26 | 2010-12-21 | Alcatel-Lucent Usa Inc. | Multi-path acquisition in the presence of very high data rate users |
US7548760B2 (en) * | 2006-01-13 | 2009-06-16 | Alcatel-Lucent Usa Inc. | Method of reverse link dynamic power control in a wireless communication system using quality feedback from a delay-sensitive traffic stream or overhead channel |
US7920517B2 (en) * | 2006-04-28 | 2011-04-05 | Alcatel-Lucent Usa Inc. | Uplink load control including individual measurements |
KR101407572B1 (en) * | 2006-10-27 | 2014-06-30 | 한국전자통신연구원 | Method for reporting a channel quality information in wireless communication system |
KR101386211B1 (en) * | 2006-11-02 | 2014-04-17 | 한국전자통신연구원 | Method of access-uplink power control using mobile multi-hop relay and system thereof |
KR20090036765A (en) * | 2007-10-10 | 2009-04-15 | 삼성전자주식회사 | Output bit rate set method for adaptive video data transmission in wibro system |
KR100914322B1 (en) | 2007-12-07 | 2009-08-27 | 한국전자통신연구원 | Apparatus for evaluating interference of wireless communication system |
US20100103983A1 (en) * | 2008-10-29 | 2010-04-29 | Yi-Pin Wang | Root spreading code based assignment for hsdpa |
WO2011028285A2 (en) * | 2009-09-01 | 2011-03-10 | Zte (Usa) Inc. | Connectionless modes for wireless machine to machine communications in wireless communication networks |
WO2011088501A1 (en) | 2010-01-19 | 2011-07-28 | National Ict Australia Limited | Estimation of signal to noise ratio in receivers |
WO2011126417A1 (en) * | 2010-04-09 | 2011-10-13 | Telefonaktiebolaget L M Ericsson (Publ) | Method and arrangement in a wireless network for determining an uplink received power target value |
WO2011129730A1 (en) * | 2010-04-16 | 2011-10-20 | Telefonaktiebolaget L M Ericsson (Publ) | Power controller and method for power control in a cellular network |
US8964549B2 (en) * | 2010-06-22 | 2015-02-24 | Sierra Wireless, Inc. | Method and apparatus for managing wireless communication based on network traffic level |
RU2533159C2 (en) * | 2010-09-16 | 2014-11-20 | ЗетТиИ Уистрон Телеком АБ | Method and system for improved noise suppression by path selection |
CN106170936B (en) * | 2015-06-27 | 2019-07-12 | 华为技术有限公司 | The method and apparatus of signal-to-noise ratio are determined in wireless communication |
US10736114B2 (en) | 2018-01-10 | 2020-08-04 | Charter Communications Operating, Llc | RF channel analysis and improved usage of wireless channels in a wireless network |
KR102135766B1 (en) * | 2018-10-18 | 2020-07-20 | 한국전자통신연구원 | Method and apparatus for assessing interference effect of the fixed system by the mobile system considering time percentage |
CN113748622A (en) * | 2019-02-14 | 2021-12-03 | 苹果公司 | Method of SNR, ES and NOC settings for NR performance requirements |
US11527990B2 (en) | 2019-02-20 | 2022-12-13 | Sunpower Corporation | Aggregated photovoltaic panels |
Family Cites Families (325)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2149518A (en) | 1937-05-25 | 1939-03-07 | Sr Thomas Frank | Line holding device |
BE653080A (en) | 1963-09-17 | 1964-12-31 | ||
US4768023A (en) | 1987-03-12 | 1988-08-30 | Xie Alex J | Diaper wetness signalling system |
AU642540B2 (en) | 1990-09-19 | 1993-10-21 | Philips Electronics N.V. | Record carrier on which a main data file and a control file have been recorded, method of and device for recording the main data file and the control file, and device for reading the record carrier |
GB9023605D0 (en) * | 1990-10-30 | 1990-12-12 | British Telecomm | Digital radio |
IL100213A (en) | 1990-12-07 | 1995-03-30 | Qualcomm Inc | CDMA microcellular telephone system and distributed antenna system therefor |
US5210770A (en) | 1991-09-27 | 1993-05-11 | Lockheed Missiles & Space Company, Inc. | Multiple-signal spread-spectrum transceiver |
EP1236470A3 (en) | 1991-11-22 | 2004-09-01 | Alcon Laboratories, Inc. | Angiostatic steroids |
EP0559348A3 (en) * | 1992-03-02 | 1993-11-03 | AT&T Corp. | Rate control loop processor for perceptual encoder/decoder |
JP3251640B2 (en) | 1992-06-18 | 2002-01-28 | 株式会社東芝 | Data transmission method and device |
US5404355A (en) | 1992-10-05 | 1995-04-04 | Ericsson Ge Mobile Communications, Inc. | Method for transmitting broadcast information in a digital control channel |
US5406585A (en) | 1992-11-30 | 1995-04-11 | Motorola, Inc. | Method and apparatus for trellis decoding in a multiple-access system |
DE4396373T1 (en) | 1992-12-14 | 1996-03-21 | Cecil Gwilliam Jones | Binding device and device and method for binding the binding device |
US5553062A (en) * | 1993-04-22 | 1996-09-03 | Interdigital Communication Corporation | Spread spectrum CDMA interference canceler system and method |
US5394433A (en) | 1993-04-22 | 1995-02-28 | International Business Machines Corporation | Frequency hopping pattern assignment and control in multiple autonomous collocated radio networks |
IT1270938B (en) | 1993-05-14 | 1997-05-16 | Cselt Centro Studi Lab Telecom | PROCEDURE FOR THE CONTROL OF THE TRANSMISSION ON A SAME CHANNEL OF INFORMATION FLOWS AT VARIABLE SPEED IN COMMUNICATION SYSTEMS BETWEEN MOBILE VEHICLES, AND A SYSTEM USING SUCH PROCEDURE |
JP2888102B2 (en) | 1993-08-26 | 1999-05-10 | 三菱電機株式会社 | Transmitter and receiver for time diversity communication device, and time diversity communication device |
ZA946674B (en) | 1993-09-08 | 1995-05-02 | Qualcomm Inc | Method and apparatus for determining the transmission data rate in a multi-user communication system |
US5463342A (en) * | 1993-09-30 | 1995-10-31 | Westinghouse Electric Corp. | Method and apparatus for enhancing signal-to-noise ratio and improving sensitivity and signal detector employing same |
SE503548C2 (en) | 1993-10-01 | 1996-07-01 | Telia Ab | Device in OFDM multi-user system |
US5490165A (en) | 1993-10-28 | 1996-02-06 | Qualcomm Incorporated | Demodulation element assignment in a system capable of receiving multiple signals |
US6157668A (en) | 1993-10-28 | 2000-12-05 | Qualcomm Inc. | Method and apparatus for reducing the average transmit power of a base station |
ZA948133B (en) | 1993-10-28 | 1996-05-17 | Qualcomm Inc | Method and apparatus for reducing the average transmit power from a sectorized base station |
DE69433899T2 (en) | 1993-11-01 | 2005-08-04 | Qualcomm, Inc., San Diego | METHOD AND DEVICE FOR TRANSMITTING DIGITAL DATA AT A VARIABLE RATE |
US5732391A (en) | 1994-03-09 | 1998-03-24 | Motorola, Inc. | Method and apparatus of reducing processing steps in an audio compression system using psychoacoustic parameters |
US6134218A (en) | 1994-04-28 | 2000-10-17 | Pmc-Sierra (Maryland), Inc. | Many dimensional congestion detection system and method |
US5544156A (en) | 1994-04-29 | 1996-08-06 | Telefonaktiebolaget Lm Ericsson | Direct sequence CDMA coherent uplink detector |
US5697053A (en) | 1994-07-28 | 1997-12-09 | Lucent Technologies Inc. | Method of power control and cell site selection |
KR0156478B1 (en) | 1994-09-15 | 1998-11-16 | 구자홍 | Apparatus and method of charging wireless telephone |
KR970011690B1 (en) | 1994-11-22 | 1997-07-14 | 삼성전자 주식회사 | Data receiver & transmitter of spread spectrum using pilot channel |
US5592470A (en) | 1994-12-21 | 1997-01-07 | At&T | Broadband wireless system and network architecture providing broadband/narrowband service with optimal static and dynamic bandwidth/channel allocation |
US5553083B1 (en) | 1995-01-19 | 2000-05-16 | Starburst Comm Corp | Method for quickly and reliably transmitting frames of data over communications links |
FR2730883B1 (en) | 1995-02-17 | 1997-04-04 | Alcatel Telspace | DEVICE FOR INITIALIZING A VITERBI DECODER COMPRISED IN A RECEIVER OF SIGNALS TRANSMITTED IN THE FORM OF PACKETS TRANSMITTER, RECEIVER AND CORRESPONDING METHOD |
FI98172C (en) | 1995-05-24 | 1997-04-25 | Nokia Telecommunications Oy | Method for transmitting a pilot signal and a cellular radio system |
GB2301751B (en) | 1995-06-02 | 2000-02-09 | Dsc Communications | Control message transmission in telecommunications systems |
US6597913B2 (en) | 1995-06-05 | 2003-07-22 | Motorola, Inc. | Distributed dynamic channel management in cellular systems |
US6111911A (en) * | 1995-06-07 | 2000-08-29 | Sanconix, Inc | Direct sequence frequency ambiguity resolving receiver |
US5726978A (en) | 1995-06-22 | 1998-03-10 | Telefonaktiebolaget L M Ericsson Publ. | Adaptive channel allocation in a frequency division multiplexed system |
KR100331437B1 (en) * | 1995-06-30 | 2002-08-08 | 삼성전자 주식회사 | Adaptive bit switch apparatus of dmt system and method thereof |
US5752193A (en) | 1995-09-01 | 1998-05-12 | Motorola, Inc. | Method and apparatus for communicating in a wireless communication system |
US6230203B1 (en) | 1995-10-20 | 2001-05-08 | Scientific-Atlanta, Inc. | System and method for providing statistics for flexible billing in a cable environment |
JPH09116475A (en) | 1995-10-23 | 1997-05-02 | Nec Corp | Time diversity transmission/reception system |
JP2737730B2 (en) | 1995-11-30 | 1998-04-08 | 日本電気株式会社 | Spread spectrum transceiver |
KR0170190B1 (en) | 1995-12-06 | 1999-03-30 | 정선종 | Control method of traffic load of cdma mobile communication system |
US5991271A (en) * | 1995-12-20 | 1999-11-23 | Us West, Inc. | Signal-to-channel mapping for multi-channel, multi-signal transmission systems |
US5862451A (en) * | 1996-01-22 | 1999-01-19 | Motorola, Inc. | Channel quality management in a cable telephony system |
WO1997028505A1 (en) | 1996-01-31 | 1997-08-07 | Ipsilon Networks, Inc. | Improved method and apparatus for dynamically shifting between routing and switching packets in a transmission network |
US5774809A (en) | 1996-02-12 | 1998-06-30 | Nokia Mobile Phones Limited | Simplified mobile assisted handoff of signal between cells |
US6005876A (en) | 1996-03-08 | 1999-12-21 | At&T Corp | Method and apparatus for mobile data communication |
US5754537A (en) | 1996-03-08 | 1998-05-19 | Telefonaktiebolaget L M Ericsson (Publ) | Method and system for transmitting background noise data |
US6134215A (en) | 1996-04-02 | 2000-10-17 | Qualcomm Incorpoated | Using orthogonal waveforms to enable multiple transmitters to share a single CDM channel |
US5745480A (en) | 1996-04-03 | 1998-04-28 | Adicom Wireless, Inc. | Multi-rate wireless communications system |
JP3385299B2 (en) | 1996-05-20 | 2003-03-10 | 三菱電機株式会社 | Spread spectrum communication equipment |
US6396804B2 (en) | 1996-05-28 | 2002-05-28 | Qualcomm Incorporated | High data rate CDMA wireless communication system |
US5859840A (en) | 1996-05-31 | 1999-01-12 | Qualcomm Incorporated | Spread spectrum communication system which defines channel groups comprising selected channels that are additional to a primary channel and transmits group messages during call set up |
US5938749A (en) | 1996-06-03 | 1999-08-17 | Whittaker Communications Inc. | Queue measurement apparatus and methodology |
CN1099797C (en) | 1996-06-24 | 2003-01-22 | Ntt移动通信网株式会社 | Data transmitting method, data transmitting system, transmitter and receiver |
US6061359A (en) | 1996-08-02 | 2000-05-09 | Golden Bridge Technology, Inc. | Increased-capacity, packet spread-spectrum system and method |
US5647366A (en) * | 1996-09-17 | 1997-07-15 | Siemens Medical Systems, Inc. | Method and system for automatic measurements of doppler waveforms |
US5764551A (en) * | 1996-10-15 | 1998-06-09 | The United States Of America As Represented By The Secretary Of The Army | Fast high-signal-to-noise ratio equivalent time processor |
US6038216A (en) | 1996-11-01 | 2000-03-14 | Packeteer, Inc. | Method for explicit data rate control in a packet communication environment without data rate supervision |
US5809059A (en) * | 1996-11-21 | 1998-09-15 | Motorola, Inc. | Method and apparatus for spread spectrum channel assignment |
US5956642A (en) | 1996-11-25 | 1999-09-21 | Telefonaktiebolaget L M Ericsson | Adaptive channel allocation method and apparatus for multi-slot, multi-carrier communication system |
JPH10173594A (en) | 1996-12-06 | 1998-06-26 | Hitachi Ltd | Code division multiple access communication system and sending power control method |
US6046980A (en) | 1996-12-09 | 2000-04-04 | Packeteer, Inc. | System for managing flow bandwidth utilization at network, transport and application layers in store and forward network |
US5987326A (en) | 1997-02-11 | 1999-11-16 | Qualcomm Incorporated | Transmit power reduction for a high speed CDMA link in soft handoff |
US6335922B1 (en) | 1997-02-11 | 2002-01-01 | Qualcomm Incorporated | Method and apparatus for forward link rate scheduling |
RU2115246C1 (en) | 1997-04-07 | 1998-07-10 | Военная академия связи | Method of transmission of data packs in general- purpose communication channel and control device |
US5923650A (en) | 1997-04-08 | 1999-07-13 | Qualcomm Incorporated | Method and apparatus for reverse link rate scheduling |
US5914950A (en) | 1997-04-08 | 1999-06-22 | Qualcomm Incorporated | Method and apparatus for reverse link rate scheduling |
US6396867B1 (en) | 1997-04-25 | 2002-05-28 | Qualcomm Incorporated | Method and apparatus for forward link power control |
KR100236982B1 (en) | 1997-04-25 | 2000-01-15 | 정선종 | Method for controlling handoff of mobile terminal in cdma cellular system |
US6052594A (en) | 1997-04-30 | 2000-04-18 | At&T Corp. | System and method for dynamically assigning channels for wireless packet communications |
US5991273A (en) | 1997-05-01 | 1999-11-23 | Nortel Networks Corporation | Determining SINR in a communications system |
US6009122A (en) * | 1997-05-12 | 1999-12-28 | Amati Communciations Corporation | Method and apparatus for superframe bit allocation |
KR100214293B1 (en) | 1997-05-29 | 1999-08-02 | 윤종용 | Soft swap handoff for cdma cellular system |
US6064692A (en) | 1997-06-20 | 2000-05-16 | Amati Communications Corporation | Protocol for transceiver initialization |
US6426960B2 (en) | 1997-06-24 | 2002-07-30 | Qualcomm Incorporated | Increased capacity data transmission in a CDMA wireless communication system |
US6115357A (en) | 1997-07-01 | 2000-09-05 | Packeteer, Inc. | Method for pacing data flow in a packet-based network |
KR100247967B1 (en) * | 1997-07-09 | 2000-03-15 | 윤종용 | Co-channel interference detector and method terefor |
US6222875B1 (en) | 1997-07-11 | 2001-04-24 | Telefonaktiebolaget Lm Ericsson (Publ) | Low-delay rate detection for variable rate communication systems |
FI104143B (en) | 1997-07-31 | 1999-11-15 | Nokia Networks Oy | A method for controlling communications resources |
US6031865A (en) | 1997-08-04 | 2000-02-29 | Motorola, Inc. | Rapidly decorrelating spreading sequences for DS-CDMA transceivers |
US20010012271A1 (en) | 1997-08-04 | 2001-08-09 | Arthur W. Berger | Improved acknowledgement of bandwidth requests for the block transfer of data |
US6108374A (en) * | 1997-08-25 | 2000-08-22 | Lucent Technologies, Inc. | System and method for measuring channel quality information |
US6131016A (en) | 1997-08-27 | 2000-10-10 | At&T Corp | Method and apparatus for enhancing communication reception at a wireless communication terminal |
US5956368A (en) | 1997-08-29 | 1999-09-21 | Telefonaktiebolaget Lm Ericsson | Downlink channel handling within a spread spectrum communications system |
US6144654A (en) | 1997-09-03 | 2000-11-07 | Motorola, Inc. | Method of combining and separating groups of multiple CDMA-encoded data signals and apparatus therefor |
FI973650A (en) | 1997-09-10 | 1999-03-11 | Nokia Mobile Phones Ltd | Method and arrangement for transmitting specialized cell information in a cellular radio system |
US6389000B1 (en) | 1997-09-16 | 2002-05-14 | Qualcomm Incorporated | Method and apparatus for transmitting and receiving high speed data in a CDMA communication system using multiple carriers |
US6130882A (en) * | 1997-09-25 | 2000-10-10 | Motorola, Inc. | Method and apparatus for configuring a communication system |
US6567416B1 (en) | 1997-10-14 | 2003-05-20 | Lucent Technologies Inc. | Method for access control in a multiple access system for communications networks |
US6574211B2 (en) | 1997-11-03 | 2003-06-03 | Qualcomm Incorporated | Method and apparatus for high rate packet data transmission |
US6101168A (en) | 1997-11-13 | 2000-08-08 | Qualcomm Inc. | Method and apparatus for time efficient retransmission using symbol accumulation |
US5857174A (en) | 1997-11-21 | 1999-01-05 | Dugan; John W. | Real estate appraisal method and device for standardizing real property marketing analysis by using pre-adjusted appraised comparable sales |
KR100246537B1 (en) | 1997-11-25 | 2000-03-15 | 정선종 | Pilot symbol aidea dual channel QPSK for CDMA system |
KR100269593B1 (en) | 1997-12-02 | 2000-10-16 | 정선종 | Orthogonal complex spreading based modulation method for multichannel transmission |
US6128283A (en) | 1997-12-03 | 2000-10-03 | Nortel Networks Corporation | Method and apparatus for data transmission using a positive group acknowledgement protocol |
US6094459A (en) * | 1997-12-16 | 2000-07-25 | Integrated Telecom Express | Circuit for configuring data and energy parameters in a multi-channel communications system |
US6084917A (en) * | 1997-12-16 | 2000-07-04 | Integrated Telecom Express | Circuit for configuring and dynamically adapting data and energy parameters in a multi-channel communications system |
US6088387A (en) * | 1997-12-31 | 2000-07-11 | At&T Corp. | Multi-channel parallel/serial concatenated convolutional codes and trellis coded modulation encoder/decoder |
US6259746B1 (en) * | 1998-01-14 | 2001-07-10 | Motorola Inc. | Method for allocating data and power in a discrete multi-tone communication system |
US6141388A (en) * | 1998-03-11 | 2000-10-31 | Ericsson Inc. | Received signal quality determination method and systems for convolutionally encoded communication channels |
US6201954B1 (en) * | 1998-03-25 | 2001-03-13 | Qualcomm Inc. | Method and system for providing an estimate of the signal strength of a received signal |
KR100338662B1 (en) | 1998-03-31 | 2002-07-18 | 윤종용 | Apparatus and method for communication channel in a cdma communication system |
US5973642A (en) | 1998-04-01 | 1999-10-26 | At&T Corp. | Adaptive antenna arrays for orthogonal frequency division multiplexing systems with co-channel interference |
JP3028800B2 (en) | 1998-05-01 | 2000-04-04 | 日本電気株式会社 | CDMA cellular system and spreading code detection method in CDMA cellular system |
EP1080555B1 (en) * | 1998-05-04 | 2009-08-12 | Nokia Corporation | Method of synchronisation of a base station network |
KR100291476B1 (en) | 1998-05-25 | 2001-07-12 | 윤종용 | A method and a system for controlling a pilot measurement request order in cellular system |
US6507585B1 (en) | 1998-05-27 | 2003-01-14 | 3Com Corporation | Multi-carrier LAN adapter device using frequency domain equalizer |
US6744754B1 (en) | 1998-06-09 | 2004-06-01 | Lg Information & Communications, Ltd. | Control of forward link power CDMA mobile communication system |
US6201576B1 (en) * | 1998-06-26 | 2001-03-13 | Lucent Technologies Inc. | Apparatus and method for detecting an NTSC signal in an HDTV transmission signal |
US6208858B1 (en) | 1998-07-21 | 2001-03-27 | Qualcomm Incorporated | System and method for reducing call dropping rates in a multi-beam communication system |
KR100306286B1 (en) | 1998-08-04 | 2001-09-29 | 윤종용 | Channel communication apparatus and method of cdma communication system |
CN1277767A (en) | 1998-08-26 | 2000-12-20 | 诺基亚网络有限公司 | Bidirectional ARQ apparatus and method |
US6590879B1 (en) | 1998-08-28 | 2003-07-08 | Nortel Networks Limited | Method, mobile station, basestation and mobile communications system for performing handoff independently for groups of physical direct sequence-code division multiple access channels |
US6310869B1 (en) | 1998-08-31 | 2001-10-30 | Qualcomm Incorporated | Method and apparatus for reducing amplitude variations and interference in communication signals, such as in wireless communication signals employing inserted pilot symbols |
US6347080B2 (en) | 1998-09-09 | 2002-02-12 | Qualcomm, Inc. | Energy based communication rate detection system and method |
US6490267B1 (en) | 1998-09-29 | 2002-12-03 | Samsung Electronics, Co., Ltd. | Device and method for generating spreading code and spreading channel signals using spreading code in a CDMA communication system |
DE69837333T2 (en) | 1998-10-19 | 2007-12-20 | Nortel Matra Cellular | A method and apparatus for establishing a radio connection with a destination base station in a cellular or wireless mobile communication system |
DE19848116A1 (en) | 1998-10-19 | 2000-05-04 | Siemens Ag | Method and radio communication system for signaling control |
JP2000134662A (en) | 1998-10-26 | 2000-05-12 | Fujitsu Ltd | Mobile communication system and mobile machine |
US6512925B1 (en) | 1998-12-03 | 2003-01-28 | Qualcomm, Incorporated | Method and apparatus for controlling transmission power while in soft handoff |
US6505058B1 (en) | 1998-12-04 | 2003-01-07 | Motorola, Inc. | Method for determining whether to wake up a mobile station |
SE514328C2 (en) | 1998-12-18 | 2001-02-12 | Ericsson Telefon Ab L M | Method and arrangement of a radio communication system for carrying out message transmission |
WO2000038444A1 (en) | 1998-12-18 | 2000-06-29 | Telefonaktiebolaget Lm Ericsson (Publ) | Selective and efficient messaging in a mobile communications system |
US6788728B1 (en) | 1999-01-12 | 2004-09-07 | Sony Corporation | System and method for reducing peak-to-average ratio of the reverse link modulator in a CDMA phone system |
US6205129B1 (en) | 1999-01-15 | 2001-03-20 | Qualcomm Inc. | Method and apparatus for variable and fixed forward link rate control in a mobile radio communications system |
US6442130B1 (en) | 1999-01-21 | 2002-08-27 | Cisco Technology, Inc. | System for interference cancellation |
KR100526537B1 (en) | 1999-02-13 | 2005-11-08 | 삼성전자주식회사 | Apparatus and method for allocating orthogonal codes in cdma communication system having variable rate channel structure |
US6317435B1 (en) | 1999-03-08 | 2001-11-13 | Qualcomm Incorporated | Method and apparatus for maximizing the use of available capacity in a communication system |
US6473418B1 (en) | 1999-03-11 | 2002-10-29 | Flarion Technologies, Inc. | Orthogonal frequency division multiplexing based spread spectrum multiple access |
US6535723B1 (en) | 1999-03-15 | 2003-03-18 | Lucent Technologies Inc. | Method of power control for a wireless communication system having multiple information rates |
US6169759B1 (en) | 1999-03-22 | 2001-01-02 | Golden Bridge Technology | Common packet channel |
US6621796B1 (en) | 1999-03-22 | 2003-09-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Discard mechanism for selective repeat automatic repeat request |
US6496496B1 (en) | 1999-04-22 | 2002-12-17 | Nortel Networks Limited | Crucial control message transmission method and systems |
US6167273A (en) | 1999-04-28 | 2000-12-26 | Nokia Mobile Phones Ltd. | Apparatus, and associated method, for effectuating power control to maintain desired QoS levels in the performance of a communication service |
US6233455B1 (en) | 1999-05-03 | 2001-05-15 | Nortel Networks Limited | Method for utilizing negative T—COMP to improve handoff reliability |
GB9910449D0 (en) | 1999-05-07 | 1999-07-07 | Koninkl Philips Electronics Nv | Radio communication system |
US6414988B1 (en) | 1999-05-12 | 2002-07-02 | Qualcomm Incorporated | Amplitude and phase estimation method in a wireless communication system |
JP3486576B2 (en) | 1999-05-18 | 2004-01-13 | シャープ株式会社 | OFDM receiver and frequency offset compensation method thereof |
US6351460B1 (en) | 1999-05-24 | 2002-02-26 | Qualcomm Incorporated | Method and apparatus for a dedicated control channel in an early soft handoff in a code division multiple access communication system |
JP3601816B2 (en) | 1999-05-31 | 2004-12-15 | 韓國電子通信研究院 | Modulator, terminal, and modulation method in mobile communication system |
KR100406531B1 (en) | 1999-05-31 | 2003-11-22 | 한국전자통신연구원 | Apparatus and method for modulating data message by employing orthogonal variable spreading factor (ovsf) codes in mobile communication system |
US6775544B2 (en) | 1999-06-03 | 2004-08-10 | At&T Wireless Services, Inc. | Automatic diagnostic for detection of interference in wireless communication system |
JP2000349740A (en) | 1999-06-08 | 2000-12-15 | Matsushita Electric Ind Co Ltd | Transmitter-receiver |
FI109072B (en) | 1999-06-16 | 2002-05-15 | Nokia Corp | Method and Arrangement for Selecting a Channel Encoding and Interleaving Procedure in Some Packet Data Connections |
US6532258B1 (en) * | 1999-06-24 | 2003-03-11 | Ibiquity Digital Corporation | Method for estimating signal-to-noise ratio of digital carriers in an AM compatible digital audio broadcasting system |
US6490461B1 (en) * | 1999-06-24 | 2002-12-03 | Telefonaktiebolaget Lm Ericsson (Publ) | Power control based on combined quality estimates |
US6611507B1 (en) | 1999-07-30 | 2003-08-26 | Nokia Corporation | System and method for effecting information transmission and soft handoff between frequency division duplex and time division duplex communications systems |
US6456653B1 (en) | 1999-08-25 | 2002-09-24 | Lucent Technologies Inc. | Fast and accurate signal-to-noise ratio estimation technique for OFDM systems |
JP3412689B2 (en) | 1999-08-26 | 2003-06-03 | 日本電気株式会社 | Mobile phone |
US6208699B1 (en) | 1999-09-01 | 2001-03-27 | Qualcomm Incorporated | Method and apparatus for detecting zero rate frames in a communications system |
US6571104B1 (en) | 1999-09-07 | 2003-05-27 | Lucent Technologies Inc. | Power control with effective Eb/N0 |
US6609007B1 (en) | 1999-09-14 | 2003-08-19 | Lucent Technologies Inc. | Apparatus and method for controlling the transmission power of the forward link of a wireless communication system |
US6563810B1 (en) | 1999-09-30 | 2003-05-13 | Qualcomm Incorporated | Closed loop resource allocation |
CN1152492C (en) | 1999-09-30 | 2004-06-02 | 富士通株式会社 | Transmitter, receiver and transmitting method in multi-carrier transmission system |
SE515050C2 (en) * | 1999-10-01 | 2001-06-05 | Ericsson Telefon Ab L M | Method and device in mobile radio systems with the possibility of switching channel coding scheme and switching from frequency hopping channel to non frequency hopping channel |
US6816827B1 (en) | 1999-10-01 | 2004-11-09 | Nec Corporation | Verification method for combinational loop systems |
US6332084B1 (en) | 1999-10-09 | 2001-12-18 | Qualcomm Incorporated | Multiple mode wireless telephone |
KR100329644B1 (en) | 1999-12-02 | 2002-03-21 | 박종섭 | Hand-off performance method using motion station location measuring method of mobile communication system |
US7110785B1 (en) | 1999-12-03 | 2006-09-19 | Nortel Networks Limited | Performing power control in a mobile communications system |
KR100354337B1 (en) | 1999-12-04 | 2002-09-28 | 한국과학기술원 | Transmission and Receiving using Spreading Modulation for Spread Spectrum Communications and thereof Apparatus |
US6917603B2 (en) | 2000-01-20 | 2005-07-12 | Nortel Networks Limited | Servicing multiple high speed data users in shared packets of a high speed wireless channel |
US6570444B2 (en) | 2000-01-26 | 2003-05-27 | Pmc-Sierra, Inc. | Low noise wideband digital predistortion amplifier |
KR100387034B1 (en) | 2000-02-01 | 2003-06-11 | 삼성전자주식회사 | Apparatus and method for scheduling packet data service in wireless communication system |
JP3826653B2 (en) | 2000-02-25 | 2006-09-27 | Kddi株式会社 | Subcarrier allocation method for wireless communication system |
US6760303B1 (en) | 2000-03-29 | 2004-07-06 | Telefonaktiebolaget Lm Ericsson (Publ) | Channel-type switching based on cell load |
JP2001277055A (en) * | 2000-03-29 | 2001-10-09 | Ricoh Co Ltd | System and method of assembling and disassembling products |
US6876641B2 (en) | 2000-04-14 | 2005-04-05 | Via Telecom Co., Ltd. | Fast feedback channel with flexible bit reliability for wireless communications |
US6694469B1 (en) | 2000-04-14 | 2004-02-17 | Qualcomm Incorporated | Method and an apparatus for a quick retransmission of signals in a communication system |
US6751199B1 (en) * | 2000-04-24 | 2004-06-15 | Qualcomm Incorporated | Method and apparatus for a rate control in a high data rate communication system |
KR100370746B1 (en) | 2000-05-30 | 2003-02-05 | 한국전자통신연구원 | Multi-Dimensional Orthogonal Resource Hopping Multiplexing Communications Method and Apparatus thereof |
DE60115720T2 (en) | 2000-06-21 | 2006-06-29 | Samsung Electronics Co., Ltd., Suwon | Apparatus and method for switching transmission of a data control channel in a high data rate mobile communication system |
KR200204497Y1 (en) | 2000-06-24 | 2000-11-15 | 이원창 | one-touch type brake releasing system for train using an air pressure |
JP4330767B2 (en) | 2000-06-26 | 2009-09-16 | 株式会社エヌ・ティ・ティ・ドコモ | Communication method and base station apparatus performing automatic retransmission request |
JP2002009734A (en) | 2000-06-27 | 2002-01-11 | Denso Corp | Communication system employing ofdm system |
KR100434459B1 (en) | 2000-06-27 | 2004-06-05 | 삼성전자주식회사 | Method and apparatus for controlling transmission of data packet in mobile telecommunication system |
KR100605973B1 (en) | 2000-06-27 | 2006-07-28 | 삼성전자주식회사 | Method and apparatus for link adaptation in mobile communication system |
JP3583353B2 (en) | 2000-07-03 | 2004-11-04 | 松下電器産業株式会社 | Communication terminal device and base station device |
EP1437841B1 (en) * | 2000-07-03 | 2006-06-21 | Matsushita Electric Industrial Co., Ltd. | Base station apparatus and radio communication method for high-speed data communication |
KR100387057B1 (en) | 2000-07-04 | 2003-06-12 | 삼성전자주식회사 | Method and apparatus for determining reverse data rate in mobile communication system |
EP1176750A1 (en) * | 2000-07-25 | 2002-01-30 | Telefonaktiebolaget L M Ericsson (Publ) | Link quality determination of a transmission link in an OFDM transmission system |
EP1176778A1 (en) | 2000-07-29 | 2002-01-30 | Micronas GmbH | Data transmission method |
US20020057730A1 (en) | 2000-08-04 | 2002-05-16 | Jonas Karlsson | Spreading factor detector |
US6952561B1 (en) * | 2000-08-31 | 2005-10-04 | Lucent Technologies Inc. | Enhanced metric for bit detection on fading channels with unknown statistics |
US6879576B1 (en) | 2000-09-06 | 2005-04-12 | Qualcomm Incorporated | Method and apparatus for processing a physical channel with partial transport format information |
US6977888B1 (en) | 2000-09-14 | 2005-12-20 | Telefonaktiebolaget L M Ericsson (Publ) | Hybrid ARQ for packet data transmission |
WO2002032009A1 (en) | 2000-10-09 | 2002-04-18 | Koninklijke Philips Electronics N.V. | Method and apparatus for the communication of information with power control |
US7072315B1 (en) | 2000-10-10 | 2006-07-04 | Adaptix, Inc. | Medium access control for orthogonal frequency-division multiple-access (OFDMA) cellular networks |
DE10050330A1 (en) * | 2000-10-11 | 2002-04-25 | Infineon Technologies Ag | Signal strength compensation device for mobile radio receiver uses mean value of signal strength for previously received data symbols |
WO2002035735A2 (en) | 2000-10-24 | 2002-05-02 | Nortel Networks Limited | Shared channel structure, arq systems and methods |
US6973098B1 (en) | 2000-10-25 | 2005-12-06 | Qualcomm, Incorporated | Method and apparatus for determining a data rate in a high rate packet data wireless communications system |
KR100354168B1 (en) | 2000-10-31 | 2002-09-27 | 엘지전자 주식회사 | Method and system for handoff communication mobile CDMA |
US6678523B1 (en) | 2000-11-03 | 2004-01-13 | Motorola, Inc. | Closed loop method for reverse link soft handoff hybrid automatic repeat request |
KR100464485B1 (en) | 2000-11-09 | 2004-12-31 | 엘지전자 주식회사 | A method and a device of transmitting high-speed packet data |
US6847623B1 (en) | 2000-11-15 | 2005-01-25 | Qualcomm Incorporated | Method and apparatus for allocating data streams onto a single channel |
JP2002159061A (en) | 2000-11-21 | 2002-05-31 | Yrp Mobile Telecommunications Key Tech Res Lab Co Ltd | Cdma mobile communication system |
KR20020043139A (en) | 2000-12-01 | 2002-06-08 | 윤종용 | Scheduling Method for high data rate service in Wireless communication System |
US6711208B2 (en) | 2000-12-04 | 2004-03-23 | Qualcomm, Incorporated | Estimation of traffic-to-pilot ratios |
US6947748B2 (en) | 2000-12-15 | 2005-09-20 | Adaptix, Inc. | OFDMA with adaptive subcarrier-cluster configuration and selective loading |
US7068702B2 (en) | 2001-01-12 | 2006-06-27 | Mediatek Incorporation | Method and apparatus for selective collision avoidance frequency hopping |
KR100469711B1 (en) | 2001-01-18 | 2005-02-02 | 삼성전자주식회사 | Apparatus and method for controlling reverse transmission in mobile communication system |
US7164669B2 (en) * | 2001-01-19 | 2007-01-16 | Adaptix, Inc. | Multi-carrier communication with time division multiplexing and carrier-selective loading |
AU2002243680A1 (en) | 2001-01-25 | 2002-08-06 | Bandspeed, Inc. | Method for bit assignment and fine gain setting in a multi-carrier communications system |
US7061986B2 (en) * | 2001-01-25 | 2006-06-13 | Bandspeed, Inc. | Method for adaptive bit assignment and fine gain setting in a multi-carrier communications system |
US7272199B2 (en) * | 2001-01-25 | 2007-09-18 | Bandspeed, Inc. | Adaptive adjustment of time and frequency domain equalizers in communications systems |
JP2002232943A (en) * | 2001-01-29 | 2002-08-16 | Sony Corp | Data transmission processing method, data reception processing method, transmitter, receiver, and cellular wireless communication system |
JP3914877B2 (en) | 2001-02-06 | 2007-05-16 | 三菱電機株式会社 | Error correction decoding method |
US6741862B2 (en) | 2001-02-07 | 2004-05-25 | Airvana, Inc. | Enhanced reverse-link rate control in wireless communication |
US7126930B2 (en) | 2001-02-10 | 2006-10-24 | Qualcomm, Incorporated | Method and apparatus for transmitting messages in a wireless communication system |
ATE362290T1 (en) | 2001-02-12 | 2007-06-15 | Lg Electronics Inc | DATA TRANSFER RATE CONTROL ON THE UPLINE FOR EACH MOBILE STATION |
US8605686B2 (en) | 2001-02-12 | 2013-12-10 | Qualcomm Incorporated | Method and apparatus for power control in a wireless communication system |
US7120134B2 (en) * | 2001-02-15 | 2006-10-10 | Qualcomm, Incorporated | Reverse link channel architecture for a wireless communication system |
US6549561B2 (en) | 2001-02-21 | 2003-04-15 | Magis Networks, Inc. | OFDM pilot tone tracking for wireless LAN |
US7164654B2 (en) | 2001-03-09 | 2007-01-16 | Denso Corporation | ARQ parameter retransmission control for variable data rate channels |
KR100469701B1 (en) | 2001-03-10 | 2005-02-02 | 삼성전자주식회사 | Apparatus and method for communicating packet data control channel in mobile communication system |
US20020131522A1 (en) | 2001-03-14 | 2002-09-19 | Tilman Felgentreff | Method and apparatus for the digital predistortion linearization, frequency response compensation linearization and feedforward linearization of a transmit signal |
KR100753500B1 (en) | 2001-03-21 | 2007-08-31 | 엘지전자 주식회사 | Method for Link Adaptation using Hybrid Automatic Repeat Request in Reverse Link, System for the same |
ATE488064T1 (en) | 2001-03-21 | 2010-11-15 | Lg Electronics Inc | RETRANSMISSION OF DATA THROUGH A REVERSE LINK IN A PACKET DATA TRANSMISSION SYSTEM WITH AUTOMATIC REPOST REQUEST |
WO2002078212A1 (en) | 2001-03-26 | 2002-10-03 | Samsung Electronics Co., Ltd | Method of controlling reverse transmission in a mobile communication system |
US6701151B2 (en) | 2001-03-27 | 2004-03-02 | Ericsson Inc. | Short access for realizing a signaling radio bearer in geran |
US8199696B2 (en) | 2001-03-29 | 2012-06-12 | Qualcomm Incorporated | Method and apparatus for power control in a wireless communication system |
KR100800884B1 (en) | 2001-03-29 | 2008-02-04 | 삼성전자주식회사 | Transmission controlling method of reverse rink in mobile communication system |
KR100429526B1 (en) | 2001-03-29 | 2004-05-03 | 삼성전자주식회사 | Data rate information transmitting/receiving method and device in a mobile communication system |
US7286558B2 (en) | 2001-03-29 | 2007-10-23 | Samsung Electronics Co., Ltd. | Method and device for transmitting/receiving data rate information in a mobile communication system |
CA2380039C (en) | 2001-04-03 | 2008-12-23 | Samsung Electronics Co., Ltd. | Method of transmitting control data in cdma mobile communication system |
US7903610B2 (en) | 2001-04-03 | 2011-03-08 | Nokia Corporation | Reverse link handoff mechanism with hybrid ARQ and cell site selection |
US6982946B2 (en) | 2001-04-05 | 2006-01-03 | Telefonaktiebolaget Lm Ericsson (Publ) | Partly orthogonal multiple code trees |
US6836666B2 (en) | 2001-05-08 | 2004-12-28 | Lucent Technologies Inc. | Method to control uplink transmissions in a wireless communication system |
KR100724847B1 (en) | 2001-05-09 | 2007-06-04 | 삼성전자주식회사 | Apparatus and method for codding decodding in cdma wireless communication system |
ATE369674T1 (en) | 2001-05-14 | 2007-08-15 | Lg Electronics Inc | METHOD FOR CONTROLLING DATA TRANSMISSION IN A RADIO COMMUNICATIONS SYSTEM |
US7158504B2 (en) | 2001-05-21 | 2007-01-02 | Lucent Technologies, Inc. | Multiple mode data communication system and method and forward and/or reverse link control channel structure |
KR100736476B1 (en) | 2001-06-02 | 2007-07-06 | 엘지전자 주식회사 | Method for generating indication code of rate indicator channel in a mobile communication and apparatus thereof |
US6895235B2 (en) | 2001-06-05 | 2005-05-17 | Telcordia Technologies, Inc. | Adaptive load and coverage management system and method |
JP3427381B2 (en) | 2001-06-20 | 2003-07-14 | 富士通株式会社 | Noise cancellation method and apparatus |
AU2002317073A1 (en) | 2001-06-27 | 2003-03-03 | Nortel Networks Limited | Mapping information in wireless communications systems |
US6751444B1 (en) | 2001-07-02 | 2004-06-15 | Broadstorm Telecommunications, Inc. | Method and apparatus for adaptive carrier allocation and power control in multi-carrier communication systems |
JP2003018117A (en) | 2001-07-04 | 2003-01-17 | Nippon Telegr & Teleph Corp <Ntt> | Multiple access equipment and multiple access method |
US7336954B2 (en) | 2001-07-05 | 2008-02-26 | Qualcomm Incorporated | Method and apparatus for soft handoff between base stations using different frame formats |
KR100747524B1 (en) | 2001-07-07 | 2007-08-08 | 엘지전자 주식회사 | Method for controlling signal power in variable data rate mode |
JP2004535136A (en) | 2001-07-10 | 2004-11-18 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | How to send data packets |
JP3607643B2 (en) | 2001-07-13 | 2005-01-05 | 松下電器産業株式会社 | Multicarrier transmission apparatus, multicarrier reception apparatus, and multicarrier radio communication method |
US6917581B2 (en) | 2001-07-17 | 2005-07-12 | Ipr Licensing, Inc. | Use of orthogonal or near orthogonal codes in reverse link |
US6904286B1 (en) | 2001-07-18 | 2005-06-07 | Cisco Technology, Inc. | Method and system of integrated rate control for a traffic flow across wireline and wireless networks |
US6751264B2 (en) | 2001-07-27 | 2004-06-15 | Motorola, Inc. | Receiver and method therefor |
US7221653B2 (en) | 2001-07-30 | 2007-05-22 | Telefonaktiebolaget Lm Ericsson (Publ) | Fast flow control methods for communication networks |
US20030028251A1 (en) | 2001-07-30 | 2003-02-06 | Mathews Hallett H. | Methods and devices for interbody spinal stabilization |
US7269186B2 (en) | 2001-08-06 | 2007-09-11 | Qualcomm Incorporated | Protocol for framing a payload |
JP2003060609A (en) | 2001-08-10 | 2003-02-28 | Mitsubishi Electric Corp | Communication method and apparatus thereof |
GB0120033D0 (en) | 2001-08-16 | 2001-10-10 | Fujitsu Ltd | Cell selection |
US7190964B2 (en) | 2001-08-20 | 2007-03-13 | Telefonaktiebolaget Lm Ericsson (Publ) | Reverse link power control in 1xEV-DV systems |
JP4286476B2 (en) | 2001-08-20 | 2009-07-01 | 株式会社日立国際電気 | Orthogonal frequency division multiplexing modulation receiver |
US20030039317A1 (en) | 2001-08-21 | 2003-02-27 | Taylor Douglas Hamilton | Method and apparatus for constructing a sub-carrier map |
JP4247288B2 (en) | 2001-08-27 | 2009-04-02 | パナソニック株式会社 | Wireless communication method and wireless communication device |
JP4138280B2 (en) | 2001-08-29 | 2008-08-27 | エプソントヨコム株式会社 | OFDM communication device |
US6865389B2 (en) | 2001-09-05 | 2005-03-08 | Telefonaktiegolaget Lm Ericsson | System and method for a virtual soft handover in a high data rate network based on data transmission information |
US6665309B2 (en) | 2001-09-20 | 2003-12-16 | Nokia Corporation | Apparatus, and associated method, for generating assignment information used pursuant to channel allocation in a radio communication system |
KR100807886B1 (en) | 2001-09-24 | 2008-02-27 | 에스케이 텔레콤주식회사 | Receiver of orthogonal frequency division multiple system |
US7103021B2 (en) | 2001-09-25 | 2006-09-05 | Qualcomm Incorporated | Method and apparatus for communications of data rate control information in a CDMA communication system |
US6680925B2 (en) | 2001-10-16 | 2004-01-20 | Qualcomm Incorporated | Method and system for selecting a best serving sector in a CDMA data communication system |
US7076001B2 (en) | 2001-10-16 | 2006-07-11 | Harris Corporation | System and method for an in-service decision-directed signal to noise ratio estimator |
US20030081538A1 (en) | 2001-10-18 | 2003-05-01 | Walton Jay R. | Multiple-access hybrid OFDM-CDMA system |
US6563885B1 (en) | 2001-10-24 | 2003-05-13 | Texas Instruments Incorporated | Decimated noise estimation and/or beamforming for wireless communications |
US7289529B2 (en) | 2001-10-31 | 2007-10-30 | At&T Corp. | Method and system for optimally serving stations on wireless LANs using a controlled contention/resource reservation protocol of the IEEE 802.11e standard |
US6898418B2 (en) | 2001-11-02 | 2005-05-24 | Texas Instruments Incorporated | Method of and apparatus for implementing adaptive downstream modulation in a fixed wireless communication system |
US7245600B2 (en) | 2001-11-05 | 2007-07-17 | Qualcomm, Inc. | Method and apparatus for determining reverse link load level for reverse link data scheduling in a CDMA communication system |
FI112547B (en) | 2001-12-21 | 2003-12-15 | Nokia Corp | A method for performing repetition in a positioning receiver and an electronic device |
KR100405662B1 (en) | 2001-12-28 | 2003-11-14 | 엘지전자 주식회사 | Handoff Apparatus inter different mobile communication generation system each other and method thereof |
US7039013B2 (en) | 2001-12-31 | 2006-05-02 | Nokia Corporation | Packet flow control method and device |
KR100433899B1 (en) | 2002-01-14 | 2004-06-04 | 삼성전자주식회사 | Apparatus and method for determining soft hand-over in cdma mobile communication system |
US20030152102A1 (en) | 2002-02-12 | 2003-08-14 | William Morgan | Method and apparatus for predicting a frame type |
US7336640B2 (en) | 2002-02-19 | 2008-02-26 | Texas Instruments Incorporated | Method and apparatus for CDMA demodulation |
KR200276991Y1 (en) | 2002-02-21 | 2002-05-30 | 엘지산전 주식회사 | structure for combining door on cabinet panel |
US7197085B1 (en) | 2002-03-08 | 2007-03-27 | Andrew Corporation | Frequency-dependent magnitude pre-distortion for reducing spurious emissions in communication networks |
US20040198276A1 (en) | 2002-03-26 | 2004-10-07 | Jose Tellado | Multiple channel wireless receiver |
KR100456693B1 (en) * | 2002-03-28 | 2004-11-10 | 삼성전자주식회사 | Method for minimizing setupt time by the optimization of bit allocation on multi-canannel communication system |
US7079856B2 (en) | 2002-04-05 | 2006-07-18 | Lucent Technologies Inc. | Data flow control between a base station and a mobile station |
KR100617674B1 (en) | 2002-05-07 | 2006-08-28 | 삼성전자주식회사 | Multiple walsh code demodulator using chip combiner and method thereof |
US7539165B2 (en) | 2002-05-24 | 2009-05-26 | Antti Toskala | Method and apparatus for distributed signaling for uplink rate control |
US7116708B2 (en) | 2002-06-27 | 2006-10-03 | Nortel Networks Limited | Controlling the rate of data transfer over a wireless link |
JP2004032518A (en) | 2002-06-27 | 2004-01-29 | Sony Corp | Diversity receiving method and reception apparatus |
US7257101B2 (en) * | 2002-07-03 | 2007-08-14 | Arraycomm, Llc | Selective power control messaging |
US7269389B2 (en) * | 2002-07-03 | 2007-09-11 | Arraycomm, Llc | Selective power control messaging |
US7313167B2 (en) * | 2002-09-30 | 2007-12-25 | Telefonaktiebolaget Lm Ericsson (Publ) | Signal-to-noise ratio estimation of CDMA signals |
SE0203056D0 (en) | 2002-10-11 | 2002-10-11 | Ericsson Telefon Ab L M | Method and apparatus in a telecommunication system |
US7463702B2 (en) | 2002-11-12 | 2008-12-09 | Agere Systems Inc. | System and method for one-pass blind transport format detection |
JP3583414B2 (en) | 2002-11-14 | 2004-11-04 | 松下電器産業株式会社 | CDMA transmitting apparatus and CDMA receiving apparatus |
US7499486B2 (en) | 2002-11-27 | 2009-03-03 | Agere Systems Inc. | Data transmission rate adaptation in a wireless communication system |
US7016651B1 (en) | 2002-12-17 | 2006-03-21 | Marvell International Ltd. | Apparatus and method for measuring signal quality of a wireless communications link |
JP4095665B2 (en) | 2002-12-27 | 2008-06-04 | ソフトバンクテレコム株式会社 | Channel assignment method |
US6996763B2 (en) | 2003-01-10 | 2006-02-07 | Qualcomm Incorporated | Operation of a forward link acknowledgement channel for the reverse link data |
US20040228349A1 (en) | 2003-01-10 | 2004-11-18 | Sophie Vrzic | Semi-distributed scheduling scheme for the reverse link of wireless systems |
US7155249B2 (en) | 2003-01-10 | 2006-12-26 | Qualcomm Incorporated | Modified power control for hybrid ARQ on the reverse link |
US8165148B2 (en) | 2003-01-13 | 2012-04-24 | Qualcomm Incorporated | System and method for rate assignment |
JP4331728B2 (en) | 2003-02-13 | 2009-09-16 | ノキア コーポレイション | System and method for improved detection of uplink signals and power saving of uplink signals |
US7299402B2 (en) | 2003-02-14 | 2007-11-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Power control for reverse packet data channel in CDMA systems |
US8150407B2 (en) | 2003-02-18 | 2012-04-03 | Qualcomm Incorporated | System and method for scheduling transmissions in a wireless communication system |
US8391249B2 (en) | 2003-02-18 | 2013-03-05 | Qualcomm Incorporated | Code division multiplexing commands on a code division multiplexed channel |
US7418064B2 (en) | 2003-02-18 | 2008-08-26 | Qualcomm, Incorporated | Systems and methods for hierarchically demodulating and decoding a data signal using a pilot signal and an additional signal |
US7280562B2 (en) | 2003-02-18 | 2007-10-09 | Qualcomm Incorporated | Variable packet lengths for high packet data rate communications |
US7155236B2 (en) | 2003-02-18 | 2006-12-26 | Qualcomm Incorporated | Scheduled and autonomous transmission and acknowledgement |
US7660282B2 (en) | 2003-02-18 | 2010-02-09 | Qualcomm Incorporated | Congestion control in a wireless data network |
US8023950B2 (en) | 2003-02-18 | 2011-09-20 | Qualcomm Incorporated | Systems and methods for using selectable frame durations in a wireless communication system |
US20040160922A1 (en) | 2003-02-18 | 2004-08-19 | Sanjiv Nanda | Method and apparatus for controlling data rate of a reverse link in a communication system |
US8081598B2 (en) | 2003-02-18 | 2011-12-20 | Qualcomm Incorporated | Outer-loop power control for wireless communication systems |
US20050176456A1 (en) | 2003-02-18 | 2005-08-11 | Tao Chen | Systems and methods for performing outer loop power control in wireless communication systems |
US7286846B2 (en) | 2003-02-18 | 2007-10-23 | Qualcomm, Incorporated | Systems and methods for performing outer loop power control in wireless communication systems |
US7505780B2 (en) | 2003-02-18 | 2009-03-17 | Qualcomm Incorporated | Outer-loop power control for wireless communication systems |
US8705588B2 (en) | 2003-03-06 | 2014-04-22 | Qualcomm Incorporated | Systems and methods for using code space in spread-spectrum communications |
US7327716B2 (en) | 2003-03-06 | 2008-02-05 | Nortel Networks Limited | Reverse link enhancement for CDMA 2000 Release D |
US7215930B2 (en) * | 2003-03-06 | 2007-05-08 | Qualcomm, Incorporated | Method and apparatus for providing uplink signal-to-noise ratio (SNR) estimation in a wireless communication |
US7423992B2 (en) | 2003-04-16 | 2008-09-09 | Sony Corporation | Time slot and carrier frequency allocation in a network |
JP3697521B2 (en) | 2003-04-21 | 2005-09-21 | 独立行政法人情報通信研究機構 | Receiving device, receiving method, and program |
US6882855B2 (en) | 2003-05-09 | 2005-04-19 | Motorola, Inc. | Method and apparatus for CDMA soft handoff for dispatch group members |
KR101049103B1 (en) | 2003-05-12 | 2011-07-14 | 엘지전자 주식회사 | How to determine data rate in mobile communication system |
US8477592B2 (en) | 2003-05-14 | 2013-07-02 | Qualcomm Incorporated | Interference and noise estimation in an OFDM system |
US7012912B2 (en) | 2003-05-14 | 2006-03-14 | Qualcomm Incorporated | Power control and scheduling in an OFDM system |
CN1788502B (en) | 2003-06-10 | 2011-05-18 | 诺基亚有限公司 | Method and apparatus for switching mobile station between autonomous and scheduled transmissions |
US7315527B2 (en) | 2003-08-05 | 2008-01-01 | Qualcomm Incorporated | Extended acknowledgement and rate control channel |
US8489949B2 (en) | 2003-08-05 | 2013-07-16 | Qualcomm Incorporated | Combining grant, acknowledgement, and rate control commands |
US7126928B2 (en) | 2003-08-05 | 2006-10-24 | Qualcomm Incorporated | Grant, acknowledgement, and rate control active sets |
US7706403B2 (en) | 2003-11-25 | 2010-04-27 | Telefonaktiebolaget Lm Ericsson (Publ) | Queuing delay based rate control |
US7257406B2 (en) | 2004-07-23 | 2007-08-14 | Qualcomm, Incorporated | Restrictive reuse set management |
CN1263675C (en) | 2004-08-30 | 2006-07-12 | 湖北教育学院 | Inert thick salt medium method for preparing nanometer powder |
-
2004
- 2004-03-05 US US10/794,917 patent/US7215930B2/en active Active
- 2004-03-08 EP EP04718557A patent/EP1600027B1/en not_active Expired - Lifetime
- 2004-03-08 KR KR1020107028863A patent/KR101107375B1/en active IP Right Grant
- 2004-03-08 RU RU2005130981/09A patent/RU2372744C2/en active
- 2004-03-08 CA CA2518183A patent/CA2518183C/en not_active Expired - Lifetime
- 2004-03-08 ES ES10172964.8T patent/ES2629830T3/en not_active Expired - Lifetime
- 2004-03-08 AT AT04718557T patent/ATE519280T1/en not_active IP Right Cessation
- 2004-03-08 WO PCT/US2004/007015 patent/WO2004080106A2/en active Application Filing
- 2004-03-08 JP JP2006506944A patent/JP4653077B2/en not_active Expired - Lifetime
- 2004-03-08 CN CN201010157112XA patent/CN101868015B/en not_active Expired - Lifetime
- 2004-03-08 AU AU2004217283A patent/AU2004217283B2/en not_active Ceased
- 2004-03-08 TW TW099142031A patent/TWI423717B/en not_active IP Right Cessation
- 2004-03-08 CN CN2004800121000A patent/CN1784921B/en not_active Expired - Lifetime
- 2004-03-08 ES ES04718557T patent/ES2368219T3/en not_active Expired - Lifetime
- 2004-03-08 EP EP10172964.8A patent/EP2247006B1/en not_active Expired - Lifetime
- 2004-03-08 BR BRPI0419347-4A patent/BRPI0419347B1/en active IP Right Grant
- 2004-03-08 MX MXPA05009463A patent/MXPA05009463A/en active IP Right Grant
- 2004-03-08 EP EP10178999.8A patent/EP2264918B1/en not_active Expired - Lifetime
- 2004-03-08 KR KR1020057016615A patent/KR101071518B1/en active IP Right Grant
- 2004-03-08 HU HUE10172964A patent/HUE035063T2/en unknown
- 2004-03-08 TW TW093106045A patent/TWI341665B/en not_active IP Right Cessation
- 2004-03-08 KR KR1020107007499A patent/KR101096941B1/en active IP Right Grant
- 2004-03-08 BR BRPI0408075A patent/BRPI0408075B1/en active IP Right Grant
-
2007
- 2007-01-02 US US11/619,168 patent/US8548387B2/en not_active Expired - Lifetime
-
2009
- 2009-07-30 RU RU2009129441/07A patent/RU2524167C2/en active
-
2010
- 2010-08-12 JP JP2010180974A patent/JP5275300B2/en not_active Expired - Lifetime
- 2010-09-17 US US12/884,183 patent/US8676128B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101106402B (en) * | 2006-06-30 | 2012-11-14 | 英特尔公司 | Signal-to-noise ratio (SNR) method and device used for computer |
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1784921A (en) | Method and apparatus for providing uplink signal-to-noise ratio (SNR) estimation in wireless communication system | |
CN1242564C (en) | Forward link power control in cellular system using NT/IO values | |
KR101109885B1 (en) | Radio communication apparatus and subcarrier assignment method | |
CN1160872C (en) | System and method for providing an accurate estimation of received signal interference for use in wireless communications systems | |
TWI382700B (en) | Multiple modulation technique for use in a communication system | |
KR100811843B1 (en) | Apparatus and method for communicating high speed shared control channel in wideband code division multiple access communication system | |
CN1689263A (en) | Mean square estimation of channel quality measure | |
CN1418418A (en) | Frame structure for variable rate wireless channels transmitting high speed data | |
CN1469655A (en) | Project for selecting threshold to realize path selection with optimum path in radio communication | |
CN1806400A (en) | Apparatus and method for transmitting reverse packet data in mobile communication system | |
JP2010016839A (en) | Method and apparatus for high rate packet data and low delay data transmissions | |
CN102905360A (en) | Signaling of power information for mimo transmission in a wireless communication system | |
CN1579049A (en) | Method and apparatus for detecting messages with unknown signaling characteristic | |
CN1239364A (en) | Apparatus and methods for determining rate of transmitted variable rate data | |
CN1846381A (en) | Radio communication apparatus and peak suppressing method | |
CN1249582A (en) | Code-division multiple access emitter capable of reducing emission power | |
CN1708935A (en) | Data detection and demodulation for wireless communication systems | |
CN1702980A (en) | Method for determining threshold value for on/off controlling output power of mobile communication terminal | |
CN101065922A (en) | Method and apparatus for assigning users to use arq-interlaces in a wireless cellular communication system | |
CN1783746A (en) | Radio communication equipment, transmission power control method therefor, and program therefor | |
US8005127B2 (en) | Retransmission in a cellular communication system | |
KR100954513B1 (en) | Method and apparatus for acknowledging reverse link transmissions in a communications system | |
CN1158803C (en) | Propagation path estimating method for interference eliminator and interference eliminator | |
CN1643807A (en) | Method and device for estimating signal interference ratio | |
CN1471767A (en) | Simplified quality indicator bit test procedures |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1087877 Country of ref document: HK |
|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
REG | Reference to a national code |
Ref country code: HK Ref legal event code: WD Ref document number: 1087877 Country of ref document: HK |
|
CX01 | Expiry of patent term | ||
CX01 | Expiry of patent term |
Granted publication date: 20101208 |